Electronics and Programming Quiz

What function is run once at the beginning of a program?

• setup()

• loop()

• initialize()

• run()

Which function is used to set a pin as input or output?

• digitalWrite()

• digitalRead()

• pinMode()

• setPin()

What does digitalWrite() do?

• Reads a digital pin's state

• Sets a digital pin as high/low

• Initializes a pin

• Runs a loop

What is the purpose of digitalRead()?

• Reads a digital pin's state

• Writes a digital signal

• Initializes a pin

• Sets a pin as input

What is the shorter lead of an LED called?

• Negative lead

• Positive lead

• Anode

• Cathode

Which side of an LED is the anode?

• Shorter lead

• Ground lead

• Positive side

• Negative side

What does polarity refer to in LEDs?

• The voltage applied

• The color of the LED

• The length of the leads

• The direction of current flow

What is a function in programming?

• An input method

• A variable type

• A block of code with a name

• A data structure

What is the purpose of the setup() function?

• To run repeatedly

• To write digital signals

• To read pin states

• To initialize settings

What does the term 'ground' refer to in electronics?

• Positive voltage

• Negative voltage

• Reference point

• High current